Sign "HELP"

Koko signs "HELP"

Penny & Darlene sign "HELP"

GSL (Gorilla Sign Language: Modified ASL + Natural Gestures)

ASL (American Sign Language)

Sample Koko Videos Containing the Sign “KOKO”

Koko introduces herself and asks people to help save her species, gorillas.
Other signs: KOKO, GORILLA, GOOD, FROWN/SAD, HELP